Nick and Bart climbed a 2000-m mountain. Nick took a 3-km trail, and Bart took a 6-km trail. If Nick and Bart weigh the same, their packs weigh the same, and they walk the same speed, why did Nick have a harder climb?

Which statement about the pancreas is not true? a. it is an endocrine organ in the abdomen. b. it release chemicals into the digestive system. c. it releases insulin to increase glucose levels. d. it release hormones into the bloodstream.